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ML4851-3
ML4851-3 - Brand New ML IC Chips
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
GENERAL DESCRIPTION
The ML4851 is a low power boost regulator designed for DC to DC conversion in
1 to 3 cell battery powered systems. The maximum switching frequency can
exceed 100kHz, allowing the use of small, low cost inductors.
The combination of BiCMOS process technology, internal synchronous
rectification, variable frequency operation, and low supply current make the
ML4851 ideal for 1 cell applications. The ML4851 is capable of start-up with
input voltages as low as 1V and is available in 5V and 3.3V output versions
with output voltage accuracy of ±3%.
An integrated synchronous rectifier eliminates the need for an external
Schottky diode and provides a lower forward voltage drop, resulting in higher
conversion efficiency. In addition, low quiescent battery current and variable
frequency operation result in high efficiency even at light loads. The ML4851
requires only one inductor and two capacitors to build a very small regulator
circuit capable of achieving conversion efficiencies in excess of 90%.
The circuit also contains a RESET output which goes low when the IC can no
longer function due to low input voltage, or when the DETECT input drops below
200mV.
FEATURES
■ Guaranteed full load start-up and operation at 1V input
■ Maximum switching frequency > 100kHz
■ Pulse Frequency Modulation (PFM) and internal
synchronous rectification for high efficiency
■ Minimum external components
■ Low ON resistance internal switching FETs
■ Micropower operation
■ 5V and 3.3V output versions
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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